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EPSON EPL-5900/EPL-5900L
Revision B
Operating Principles
Description of Mechanisms
67
2.2.2.2 Lower Cassette Unit (Option for EPL-5900)
MECHANISM
Since the Lower Cassette Unit does not have drive motor, driving power in the Lower
Cassette Unit for feeding and carrying paper is transmitted from the printer (from M1) via
the connecting gear.
Paper feed method is the same as with the paper tray. However, paper separation method is
different; the separation pad method is used for the paper tray, while the separator claw is
used for the Lower Cassette Unit.
The separator claw method uses the paper separator claw installed at the paper cassette and
the elasticity of paper. Only one sheet of paper is fed by one paper feed operation.
The paper feed solenoid (SL21) is controlled from the printer side via the relay board
(PWB-A) of the Lower Cassette Unit.
PAPER EMPTY SENSOR
The paper empty sensor (PI2) is mounted on the relay board (PWB-A) of the Lower
Cassette Unit and it detects “paper empty” (absence of paper) in the paper feed cassette.
When there is paper on the tray, the actuator is lifted and the sensor turns OFF.
When the tray is empty of paper, the actuator falls into the hole in the paper lifting board
and the sensor turns ON.
Figure 2-9. Paper Feed Mechanism (Lower Cassette Unit)
Connecting Gear
Paper Feed Roller
Paper Feed Solenoid (SL21)
Paper
Relay Board (PWB-A)
Paper Empty Sensor
(PI2)
Summary of Contents for EPL-5900
Page 1: ...EPSON EPL 5900 EPL 5900L Monochrome Page Printer SERVICE MANUAL SEPG01005 ...
Page 21: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 75: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 96: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 111: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Page 138: ...C H A P T E R 5 ADJUSTMENT ...
Page 143: ...C H A P T E R 6 MAINTENANCE ...
Page 145: ...C H A P T E R 7 APPENDIX ...
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